Qing is twice as old as Rayna. Qing is 4 years younger than Paolo. The average age of Paolo, Qing and Rayna is 13. Determine their ages.

Answer 1

Q= 2R Q= P-4, 2R = P-4, P= 2R+4

(Q+R+P)/3 = 13

Q+R+P = 13(3) = 39

2R + R + 2R+4 = 39

5R =39-4 = 35

R = 35/5

= 7 years old

Q= 2(7) = 14 years old

P=2(7) + 4 = 18

7 + 14 + 18 = 39, their average is 39/3 = 13 years old

Paolo is 18 years old

Qing is 14 years old

Rayna is 7 years old